I went to try out this service and the sign up process feels pretty invasive: a phone number, a code, my email, a code, and then "pick a username" - with no ind

I went to try out this service and the sign up process feels pretty invasive: a phone number, a code, my email, a code, and then "pick a username" - with no indication of what sort of visibility it's going to have or how far and wide on the service it's going to go. I'd prefer to fill out a reCaptcha.